Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- October 10, 2020
- Submitted
- October 14, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 41188
- Aircraft time
- 32,008 hours, 9,364 cycles
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 27633
- Condition
- Inoperative
- Location
- Right Ecs Bay
- Part time
- 12,556 hours, 4,732 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK ILLUMINATES/EXTINGUISHES WITH RECALL, MASTER CAUTION RESET. GROUNDED-YES. INITIAL EVALUATION, RT PACK LIGHT ON RECALL. PZTC BITE, IAW B737-800 AMM 21-51-00-700-803 SHOWED "TCV" ON BITE. REMOVED AND REPLACED RIGHT TEMP CONTROL VALVE V141, REF B737-800 AMM 21-51-10. OPERATIONS CHECKS GOOD.